Scissors sharpener



April 26, 1949. c, HEARD 2,468,442

SCISSORS SHARPENER Filed July 22, 1946 'FIG. I. y

| NVENTOR EDWARD 'C. HEARD ATTORNEY Pa P 2,468,442

SCISSORS SHARPENER Edward .0. Heard, Los Angeles, fialii, assignorztw Heard" & Sandwall Manufacturing florporatiom. Huntington Park, Calii'., wcorporationrofflali-- fornia.

Application July 22, 1946; Serial No. 685525 4 Claims. (01. 76--82.2)

This invention-relatesto ai -scissors sharpener.

Oneobject of the inventionxis to provide a manual sharpeningz device-for scissors or shears. Another object is to provide a manual sharpener which-simultaneously sharpens both shear edges of scissors.

These and other objects are attained by my invention which will be understood from the following description, reference being made to the accompanying drawings in which Fig. 1 is a front elevational view showing my sharpener as used to sharpen scissors;

Fig. 2 is a top elevational view of my sharpener;

2. turned down end I8 'o-t' tlie-liand1e:I3; arrd also the threaded holein the-cutter plat'eeI'I theunonithreaded hole in cutter platecl Zfipermitti-ngs turn.- ing or" the plate I2 relative t0:=the;p1ate-I'I,.the head It-ofthe screwvIIiihsoldingrltzinzplacee It is necessary that tne adjoiningz suriaceszof. the cut+ te-r plates be -smoothlwfittiedrtogether sotthattthe cutters will sharpen the cutting edges of the blades of the scissors. The juxtaposed flat surfaces of the cutter plates act as guides for slid ing the device back and forth, being in contact with the inside flat surfaces of the scissor blades. Either one or both cutter plates may be free to rotate on pivot, although the sharpening is bet- Fig. 3 is a side elevational view of the same; ter controlled if one plate is fixed to the handle. Fig. 4 is an enlarged fragmentary cross-secn us n t e Sharpener, as much Pressure as tional view taken on the line 44 of Fig. 1; desired may be exerted on the cutters by hold- Fig. 5 is a perspective view of one of the cuting the scissors by the handles in the usual ters; operative position for scissors. The sharpener, Fig. 6 is a cross-sectional view taken on the line with one double cutter in contact with each of 6-6 of Fig. 3. the blades B and B is reciprocated along the Referring to the drawings, my sharpener conshear edge of the scissor blades. The relieved sists generally of two double cutter plates II and portion I6 and the sli t S ace el e on the I2 arranged to be placed in face to face relation top of the cutters permits the cutter edges to and to turn r lativ t a h th one plate as follow the curve of the scissor blades. The use of being attached to a handle I3 by means of which the two cutters on each cutter plate, one for the device is reciprocated between the blades B sharpening the scissor blade in one direction of and B of scissors, S as shown particularly in Fig. movement and the other for sharpening in the 1, the cutter edges of the respective plates slidpp direction of movement not y allOWS ing along the shear edges of the scissor blades. t e Sharpening 0f the blades o ut the ef- The cutter plates II and I2 are made of small fective shear length, but also gives a smoother plates of steel or other suitable metal, with a non-jagged sharpening of the shearing edges of mounting hole spaced below the cutter edges and the scissors. are provided on one plate edge with two integrally I claim: formed or inserted hardened metal cutters Ma 1. A ma ua a p e or SSO 'S Comprisarld lib, the cutting edges of which are at oping a handle, and a pair of cutter plates, the first posite ends of a relieved portion I6, and being of said plates being non-rotatably attached to arranged so that in sliding the device back and said handle and the second of said plates being forth only one cutting edge (of each cutter plate) pivoted in face to face relation to said first plate, is in cutting contact with the shear edge of a 40 each of said cutter plates consisting of two cutter scissor blade in one direction of sliding, and the edges arranged in opposed cutting position on an opposite cutting edge is in cutting contact when edge of each of said plates near opposite ends the device is moved along the scissor blade in thereof, whereby one cutting edge cuts the the other direction. The cutting edges are angushearing edge when the device is slidingly moved larly disposed to the cutter plate surfaces, the along the shearing edge of a scissors blade, the angle corresponding to the angle of the shear space between the two cutting edges being reedge of the scissor blades, this angle being desiglieved to a depth sufiicient to accommodate a nated A in the drawings (Fig. 4) and being usucurved shearing edge. ally about ten degrees. The top surfaces of the 2. A manual sharpener for scissors comprising cutters Ida and Mb are also preferably relieved a handle, a pair of cutter plates, the first of said back of the cutting edges. plates being non-rotatably attached to said han- The cutter plate II is non-rotatably attached dle and the second of said plates being pivoted to the handle I3, and the cutter plate I2 is rotato said first plate for relative rotary movement tably attached, by a headed screw H, which is in face to face relation, each of said plates havthreaded to engage the threaded hole in the ing two hardened cutting edges arranged on one edge of said plate at substantially right angles thereto and spaced apart, with a. relieved portion therebetween of sufficient length to accommodate a curved scissors blade, the said cutting edge of each plate nearest the scissors pivot being adapted to sharpen a blade of the scissors on sliding it along-the scissors shear edge in one direction, and the said cutting edge of each plate farthest from the scissors pivot being adapted to sharpen the same shear edge on sliding the sharpener in the opposite direction, the angular positions of the said cutting edges of the sharpener conforming substantially to the angular position of the shear edges of the scissors.

3. In a scissors sharpener adapted to be reciprocated along a scissors blade, a cutter plate having two opposed cutting edges disposed apart and at right angles to the path of reciprocation of said cutter relative to said blade with a relieved portion in said plate between said edges, said opposed cutting edges being spaced far enough apart to maintain the cutting edge in cutting relation to the blade when said blade has a slight curvature.

4. A scissors sharpener comprising a pair of sharpening members each having two cutting edges, said members being adapted to simulta- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 538,964 Hermes May 7, 1895 585,942 :Smith July 6, 1897 932,586 Sheflield Aug. 31, 1909 FOREIGN PATENTS Number Country Date 47,261 Norway Dec. 2, 1929 

